Information Processing Apparatus and Control Method Thereof, and Program

1. An information processing apparatus which executes imposition processing for laying out a finishing page on a sheet to print manuscript data on the sheet comprising: first setting means for setting a bleed width for the finishing page; second setting means for setting an imposition method that requires to execute binding processing of the sheet; determination means for determining a bleed region including the finishing page based on the bleed width for the finishing page, which is set by said first setting means, and a size of the finishing page; allocation means for determining an allocation of the manuscript data so as to align an inner side of a bleed region on a side to undergo the binding processing of the bleed region determined by said determination means to a binding side on the sheet based on setting contents by said second setting means; and third setting means for, when said second setting means sets case binding as an imposition method, setting whether or not the sheet is trimmed using an inline finisher attached to a printing device, wherein when said third setting means sets to trim the sheet using the inline finisher attached to the printing device, said allocation means determines the allocation of manuscript data for an inner sheet of casing-in so as to align the inner side of the bleed region on the side to undergo the binding processing of the bleed region determined by said determination means to the binding side on the sheet, and when said third setting means sets not to trim the sheet using the inline finisher attached to the printing device, said allocation means determines the allocation of manuscript data for an inner sheet of case binding so as to leave the bleed region on the side to undergo the binding processing of the bleed region determined by said determination means.